HVAC system description

Table 6 Log book for an heating, ventilation and air conditioning (HVAC) system Description of the situation...

Pleating, Ventilation, and Air Conditioning (HVAC) Systems. This subsection must also include a general system description, a validation summary, and information on the routine monitoring system. 

HVAC description. The points to be considered for utilities and HVAC descriptions should include identification sources for all product contact utilities and all product contact utilities applications. The air handling system supporting controlled areas should be identified with air classification for all applicable areas, including diagrams or descriptions of air flow directions, design, etc. 

In accordance with the requirement of Slovak Nuclear Regulatory Body in BNS 1.4.2 and general international requirements (SSG-3 and SSG-4), the PSA model shall be a comprehensive description of the NPP. In order to have useful information from PSA, a realistic model of the plant is necessary. To account for all relevant dependencies, all necessary support systems are included in the model such as HVAC, electrical supply and heat sink are included in the PSA model. The success criteria for front-end safety systems are derived based on detailed thermal hydraulic analysis specific for the plant and the fuel under analysis, both for core damage and for radiological releases. 

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